CN109406969A - A kind of air insulating device high-voltage great-current Combined Trials system - Google Patents
A kind of air insulating device high-voltage great-current Combined Trials system Download PDFInfo
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- CN109406969A CN109406969A CN201811474268.3A CN201811474268A CN109406969A CN 109406969 A CN109406969 A CN 109406969A CN 201811474268 A CN201811474268 A CN 201811474268A CN 109406969 A CN109406969 A CN 109406969A
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- current
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/12—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing
- G01R31/1227—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials
- G01R31/1254—Testing dielectric strength or breakdown voltage ; Testing or monitoring effectiveness or level of insulation, e.g. of a cable or of an apparatus, for example using partial discharge measurements; Electrostatic testing of components, parts or materials of gas-insulated power appliances or vacuum gaps
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- Physics & Mathematics (AREA)
- General Physics & Mathematics (AREA)
- Testing Relating To Insulation (AREA)
Abstract
The invention discloses a kind of air insulating device high-voltage great-current Combined Trials system, cable will test the casing short joint at tank body both ends, be allowed to form the current loop of a closure.The cable for being shorted tank body is passed through into punching current lifting device, the secondary winding as current lifting device.The output of power frequency testing transformer is terminated at by conducting wire on one of casing of test tank body, the shell of another output and test tank body is grounded, the primary side of power frequency testing transformer and punching current lifting device also needs to be grounded, since the secondary side of current lifting device is in high potential, the insulation between first winding and secondary winding need to be resistant to the high pressure that is put to the test.The output electric current of current lifting device and the output voltage of transformer pass through respective pressure regulator and adjust.Independently the size of voltage and current can be adjusted, wherein the phase between electric current and voltage reduces the demand to power by phase shifter manual adjustment, can especially bring great convenience to the laboratory of colleges and universities conveniently.
Description
Technical field
The present invention relates to a kind of electric equipment test systems, combine in particular for the high-voltage great-current of air insulating device
Pilot system.
Background technique
Air insulating device includes that gas-insulated combined electric (GIS) and power transfer conduit bus (GIL) etc. are electric system
Most important equipment, outstanding advantages of because of its miniaturization, high reliablity, strong through-current capability, application in the power system is increasingly
Extensively.However there may be built-in electrical insulation defect and initiation offices in manufacture, transport, installation and operational process for air insulating device
Portion's electric discharge, final deterioration cause catastrophe failure.Simultaneously as its leakproofness is tight, compact-sized, load current lower conductor is caused to be sent out
It is hot serious, accelerate insulating materials aging, insulation performance is caused to reduce；In addition, some researches show that with the liter of central electrode temperature
Height can promote the accumulation of surface Charge so as to cause the raising of insulator surface current potential, dielectric level decline.Therefore, having must
The Combined Trials of high pressure and high current are carried out to air insulating device, research temperature includes conductor, insulator etc. to its inside
The influence of the flash-over characteristic of component provides important references for the through-flow and insulating Design of air insulating device.
Currently, Scientific Research in University Laboratory is carrying out temperature to air insulating devices such as GIS and GIL due to the power limit of power supply
With insulate relevant experimental study when, it is difficult to test loop simultaneously apply high voltage and high current, therefore, often will pressurization and
Through-flow process separately carries out.First being passed through certain electric current to center conductor increases its temperature, after temperature rise reaches stable state, removes
Power down stream simultaneously accesses voltage source and is ramped up required voltage.This test method can not really simulate air insulating device reality
Working condition when border is run.
It for the needs of pilot system, is tested, i.e., is individually exported high voltage and high current using virtual load method,
Demand of the test loop to power supply capacity can be significantly reduced.The output that the HV Terminal of booster is connected to current lifting device is returned
Road makes big current loop overall work in high-voltage potential, both ensures to make the high voltage of output to depend on booster in this way and exports, is big
Electric current is exported depending on current lifting device, and can achieve the purpose that real simulation test product actual condition.
In conclusion the air insulating device high-voltage great-current Combined Trials system based on virtual load method has theoretical base
Plinth, operability is high, has good development prospect.
Summary of the invention
Of the invention is to overcome the above-mentioned prior art insufficient, provides a kind of air insulating device high-voltage great-current joint examination
Check system, using virtual load method, high voltage and high current is individually exported on the basis of limited power, makes output
High voltage depends on booster output, high current is exported depending on current lifting device.
Of the invention adopts the following technical scheme that
A kind of air insulating device high-voltage great-current Combined Trials system, in order to reach while applying high pressure and high current
Purpose, pilot system are tested the measurement of tank body, Power Frequency High Voltage Test transformer, punching current lifting device and needs by gas-insulated
The composition such as device.Before being tested, the casing short joint at tank body both ends will be tested with cable, the electric current for being allowed to be formed a closure returns
Road.The cable for being shorted tank body is passed through into punching current lifting device, the secondary winding as current lifting device.By conducting wire by industrial frequency experiment
The output of transformer terminates on one of casing of test tank body, and the shell of another output and test tank body connects
The primary side of ground, power frequency testing transformer and punching current lifting device also needs to be grounded, since the secondary side of current lifting device is in high potential,
Therefore the insulation between its first winding and secondary winding need to be resistant to the high pressure that is put to the test.Current lifting device output electric current and transformer it is defeated
Voltage passes through respective pressure regulator and adjusts out.
Traditional pilot system is limited to power, can not carry out the test of high voltage and high current simultaneously, first through-flow
Elevate the temperature and then carry out Insulation Test again, can not truly analog machine actual motion when operating condition.The present invention is limited
Power on the basis of, the pilot system built using virtual load method mainly has following advantage:
1) since high voltage and high current independently export, voltage circuit electric current very little, current loop voltage is very low, because
Although being applied with high pressure and high current on this test product simultaneously, the electric energy or power of single effective supply lack very little, can reduce in this way
Demand to power can especially bring great convenience conveniently to the laboratory of colleges and universities.
2) relative to traditional real Load Method, virtual load method can largely save electric energy.
3) it since high voltage and high current independently export, can independently the size to voltage and current carry out
It adjusts, wherein the phase between electric current and voltage is by phase shifter manual adjustment.And the through-flow method of traditional pressurization is needed to adjust and be born
The size and property for carrying impedance, in the case where impedance is difficult to adjust using will be very restricted.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention.
Specific embodiment
The virtual load method in electric energy meter calibration field is introduced into the air insulating devices pilot system such as GIS or GIL by the present invention,
Apply high voltage and high current on the basis of limited power, while to test product, it can truly simulated test facility
Actual operating mode.Traditional pilot system needs the impedance magnitude by changing circuit come the electric current and electricity of regulating loop
Pressure, and in pilot system of the present invention, high voltage and high current separately individually export, and can be convenient flexibly to it
Output valve is adjusted.Single casing in traditional GIS pilot system is changed to double-jacket tube, it is convenient while carrying out high pressure and through-flow
Test.
The pilot system is mainly made of following components:
1) gas-insulated tests tank body, and main body is a bit of GIS bus duct, is coaxially installed with conductor inside pipeline and is used for
Through-flow and pressurization, conductor both ends are drawn by two bushings, so that avoiding device ontology generates corona interference.Outside pipeline
Shell ground connection avoids generating experimenter dangerous.Bus duct can be divided into several sealed gas chambers by disc insulator,
For carrying out the simulation test in laboratory.Contain in addition, tank body can be equipped with observation window, pressure measuring instruments, gas collecting and moisture
Measurement interface etc. can carry out individually designed according to different tests demand.
2) Power Frequency High Voltage Test transformer, for power frequency high voltage needed for generating test, secondary side one end of transformer
High voltage is loaded on center conductor by ground connection, the other end by bushing.Experimental transformer is adjusted by pressure regulator and is exported
High pressure, can pass through electrostatic voltmeter measurement output high-voltage value.
3) punching current lifting device, for high current needed for generating through-flow test, by HT testing transformer when test
HV Terminal is connected to the output loop of current lifting device, makes big current loop overall work in high-voltage potential.Simultaneously, it needs to fill
Point consider the insulating capacity of current lifting device, the size of the high-voltage value according to added by test loop, the first winding of current lifting device and secondary
Winding needs that an equal amount of high pressure can be born.
4) measuring device can open up observation window or terminal board according to test demand, to acquire the examination of needs on pipeline
Test information.There is stronger electric field around high-voltage part, big current loop will generate very strong magnetic field, therefore in measuring device
The measures such as electric field shielding and magnetic screen are fully considered in selection.
In order to achieve the purpose that while applying high pressure and high current, whole reality is made by Power Frequency High Voltage Test transformer first
Circuit is tested generally in high potential, then applies high current to experimental loop using punching current lifting device.It can be with by pressure regulator
The size of voltage and current is adjusted respectively.Need to fully consider its insulating capacity when selecting current lifting device, first winding and it is secondary around
Group needs that added test voltage can be born.
Claims (3)
1. a kind of air insulating device high-voltage great-current Combined Trials system, which is characterized in that pilot system includes gas-insulated
Tank body, Power Frequency High Voltage Test transformer, punching current lifting device are tested, cable will test the casing short joint at tank body both ends, be allowed to shape
The current loop being closed at one, the cable for being shorted tank body passes through punching current lifting device, as the secondary winding of current lifting device, power frequency
The output of testing transformer terminates on one of casing of test tank body, and another output and the shell of test tank body are equal
Ground connection, the output electric current of punching current lifting device and the output voltage of transformer pass through respective pressure regulator and adjust.
2. a kind of air insulating device high-voltage great-current Combined Trials system according to claim 1, which is characterized in that work
The primary side of frequency testing transformer and punching current lifting device ground connection, since the secondary side of current lifting device is in high potential, one
Insulation between secondary winding and secondary winding need to be resistant to the high pressure that is put to the test.
3. a kind of air insulating device high-voltage great-current Combined Trials system according to claim 1, which is characterized in that examination
Testing tank body is a bit of GIS bus duct, conductor is coaxially installed with inside pipeline for through-flow and pressurization, conductor both ends pass through two
A bushing is drawn.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474268.3A CN109406969A (en) | 2018-12-04 | 2018-12-04 | A kind of air insulating device high-voltage great-current Combined Trials system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811474268.3A CN109406969A (en) | 2018-12-04 | 2018-12-04 | A kind of air insulating device high-voltage great-current Combined Trials system |
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| CN109406969A true CN109406969A (en) | 2019-03-01 |
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| CN201811474268.3A Pending CN109406969A (en) | 2018-12-04 | 2018-12-04 | A kind of air insulating device high-voltage great-current Combined Trials system |
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Cited By (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110378446A (en) * | 2019-07-16 | 2019-10-25 | 圣耀（集团）有限公司 | Electric-power safe instruments trial system |
| CN111413602A (en) * | 2020-05-19 | 2020-07-14 | 国网江苏省电力有限公司电力科学研究院 | GIS equipment insulator combined test system and method |
| CN111624376A (en) * | 2020-04-23 | 2020-09-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-current generating device for casing test and using method thereof |
| CN112485745A (en) * | 2020-11-17 | 2021-03-12 | 广东电网有限责任公司计量中心 | From simulation platform who takes isolator |
| CN112485624A (en) * | 2020-12-10 | 2021-03-12 | 广东电网有限责任公司 | Partial discharge-free test power supply circuit |
| CN118191534A (en) * | 2024-05-15 | 2024-06-14 | 国网吉林省电力有限公司电力科学研究院 | Electrical test cavity for simulating GIS internal insulation characteristic under severe cold condition and test method |
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| CN207780143U (en) * | 2018-02-27 | 2018-08-28 | 云南电网有限责任公司曲靖供电局 | Portable voltage current double-applying pilot system |
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| CN1670873A (en) * | 2005-05-12 | 2005-09-21 | 王如璋 | High-voltage and high-current two-stage current transformer |
| CN2922084Y (en) * | 2006-06-27 | 2007-07-11 | 北京华电云通电力技术有限公司 | Multi-current ratio, high-accuracy organic compound insulation dry-type high voltage current mutual inductor |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110378446A (en) * | 2019-07-16 | 2019-10-25 | 圣耀（集团）有限公司 | Electric-power safe instruments trial system |
| CN111624376A (en) * | 2020-04-23 | 2020-09-04 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-current generating device for casing test and using method thereof |
| CN111624376B (en) * | 2020-04-23 | 2022-05-13 | 中国南方电网有限责任公司超高压输电公司检修试验中心 | High-current generating device for casing test and using method thereof |
| CN111413602A (en) * | 2020-05-19 | 2020-07-14 | 国网江苏省电力有限公司电力科学研究院 | GIS equipment insulator combined test system and method |
| CN112485745A (en) * | 2020-11-17 | 2021-03-12 | 广东电网有限责任公司计量中心 | From simulation platform who takes isolator |
| CN112485624A (en) * | 2020-12-10 | 2021-03-12 | 广东电网有限责任公司 | Partial discharge-free test power supply circuit |
| CN118191534A (en) * | 2024-05-15 | 2024-06-14 | 国网吉林省电力有限公司电力科学研究院 | Electrical test cavity for simulating GIS internal insulation characteristic under severe cold condition and test method |
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Application publication date: 20190301 |